Model Test for Slope Failure according to Initial Water Contents and Seepage Conditions
The amount of rainfall has been increased in Korea because of global climate change.The average annual rainfall is about 1300 mm in Korea, but approximately 90% of the rainfall concentrated in the summer season from June to September.Therefore during the summer season, a lot of slope failures triggered by rainfall induce economic loss and damage.According to recent studies, slope failure caused not only by short term rainfall but also by prolonged rainfall and the increase of groundwater level.But the effect of initial ground condition, topographical feature, rainfall intensity, and duration of rainfall has not been clearly identified yet.In this study, testing device considering ground condition, slope inclination, rainfall intensity, and seepage condition was developed.Slope movement and failure mode were analyzed by varying the initial water content, seepage, and rainfall condition.As a result, when the rainfall and low initial water content were applied, minor slope displacement occurred and the slope surface scoured with retrogressive failure mode.Whereas, a large initial water content and rainfall with the rise of groundwater by seepage significantly increased displacement of the whole slope and the model ground tended to move with fluidity.
slope failure model test initial water content rainfall seepage
Myeongjin Park Yunki Chae Chan-Young Yune
Gangneung-Wonju National University, Gangneung, South Korea
国际会议
World Landslide Forum 3(第三届世界滑坡论坛)
北京
英文
669-672
2014-06-02（万方平台首次上网日期，不代表论文的发表时间）